“We are pleased with our improved retail sales in the second quarter, as used unit comps strengthened and we continued to open new stores,” CEO Tom Folliard said in a statement.

However, CarMax’s bottom-line growth was hampered by an 11% year-over-year leap in overhead costs to $254.7 million. The company blamed the higher costs on the “ramp in our store growth rate” and “tough” comparisons with the year before.

Also, CarMax said wholesale unit sales shrank 2%, compared with an 8% rise in total used unit sales.